not/never set the world on fire
not set the world on fireor
not set the world alight
If someone or something does not set the world on fire or does not set the world alight, they do not cause great excitement or interest. The 29-year-old Frenchman hasn't exactly set the tennis world on fire. The series isn't setting the world alight, despite some good writing and solid performances.
not/never set the ˈworld on fire(British English also not/never set the ˈThames on fire) (informal) never do anything exciting, unusual or wonderful: He’s good, but he’ll never set the world on fire. He’s not dynamic enough.
The Thames is the large river that runs through London.